Tucker Carlson slammed President Trump on Fox News Tuesday for appearing to cave on his campaign promise to not give amnesty to millions of illegal immigrants.

"The Democrats' goal is to import more Democratic voters, and by any means necessary," Carlson said. "Once they retake the Congress and the presidency, and if Trump betrays his base on immigration–that'll definitely happen–it is over. Say goodbye to borders, they are done."

"Keep in mind that the top Democrat in the house recently thanked illegal aliens for sneaking into this country. That's how Democrats feel and they're not pretending anymore," Carlson said.

The Daily Caller co-founder said, “Congress is full of people from both parties who believe that the point of our immigration policy is to provide cheap labor to their donors and to atone for America’s imaginary sins against the world. They couldn’t care less about immigration’s effect on you or your family–these are the same people the president now says he trusts to write the immigration bill, the one he will sign no matter what it says. So what was the point of running for president?”

He continued, “You will remember the president also ran on his skills as a negotiator, and he clearly has skills as a negotiator. But where were they today? The president signaled he’d be happy to legalize hundreds of thousands of illegal immigrants now and that at some point in the future tackle all that other stuff like making sure they can’t bring millions of their relatives from the third world along with them. That’s not much of a negotiation. Amnesty for DACA recipients is the only leverage the White House has. Once the president agrees to let them jump to the head of the line, ahead of millions of other people hoping to come here legally, the negotiation is over. At that point, why would Democrats agree to anything? Ending chain migration, the diversity lottery, supporting a merit based system that might actually help America? No chance.”

Carlson continued, “The Democrats’ goal is to import more Democratic voters, and by any means necessary. Once they retake the Congress and the presidency, and if Trump betrays his base on immigration–that’ll definitely happen–it is over. Say goodbye to borders, they are done. Keep in mind that the top Democrat in the house recently thanked illegal aliens for sneaking into this country. That’s how Democrats feel and they’re not pretending anymore.”

Carlson finished, “Being a Trump voter isn’t always easy, it’s like rooting for the underdog in baseball, the old Chicago Cubs. On one level there is pride, the pride that comes from doing something that fashionable people consider insane, and that’s a good feeling. But there’s also some disappointment along the way and honestly, there is some embarrassment. But you silently bear it because you know that when they finally win the World Series it will be worth everything you went through. Every sarcastic dig from your brother-in-law at Thanksgiving will seem small by comparison. In the Trump presidency, the World Series is this immigration bill. It’s the big payoff, the whole point of the exercise, and they’re not allowed to blow it.”